Download or read book Ultrahigh vacuum High resolution Transmission Electron Microscopy of Sputter deposited MoS2 Thin Films written by G. Jayaram and published by . This book was released on 1995 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ultrahigh Vacuum High Resolution Transmission Electron Microscopy of Sputter Deposited MoSsub2 Thin Films written by and published by . This book was released on 1995 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-resolution electron microscopy has been used to characterize the structure of sputter-deposited MoS2 coatings under both conventional and ultrahigh-vacuum (UHV) conditions. As deposited, the films have a mixture of short-range ordered basal-plane and edge-plane oriented grains near the film substrate interface; structural changes were characterized in a UHV transmission electron microscope as a function of two processing variables: temperature and Au deposition. Annealing in an oxygen environment was also carried out to assess chemical stability. During thermal annealing in UHV and in oxygen, substantial long-range ordering of the basal islands followed by grain growth was observed. Inhomogeneous oxidation resulting in the formation of MoO3 in the initial stages followed by grain growth, yielding the final morphology of a mixture of MoO3 crystallites of 5-50 nm size was seen on annealing in an oxidizing atmosphere. Au nucleation and growth on both thermally annealed and as-deposited films were seen to follow the Volmer-Weber mode. i.e., three-dimensional islands; these islands were also seen to be highly textured. Also, in comparison with carbon and SiO substrates, Au demonstrated higher stability to electron beam fluxes on MoS2, suggesting higher bonding strengths to the substrate. These experiments demonstrated the paramount need for UHv conditions during both deposition and characterization to avoid uncertain contamination artifacts.
Download or read book Surface Modification of Textiles written by Q Wei and published by Elsevier. This book was released on 2009-08-26 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: The surface of textiles offers an important platform for functional modifications in order to meet special requirements for a variety of applications. The surface modification of textiles may be achieved by various techniques ranging from traditional solution treatment to biological approaches. This book reviews fundamental issues relating to textile surfaces and their characterisation and explores the exciting opportunities for surface modification of a range of different textiles.Introductory chapters review some important surface modification techniques employed for improved functional behaviour of textiles and the various surface characterisation methods available. Further chapters examine the different types of surface modification suitable for textiles, ranging from the use of plasma treatments and physical vapour deposition to the use of nanoparticles. Concluding chapters discuss surface modification strategies for various applications of textiles.Surface modification of textiles is a valuable resource for chemists, surface scientists, textile technologists, fibre scientists, textile engineers and textile students. - Reviews fundamental issues relating to textiles surfaces and their characterisation - Examines various types of surface modification suitable for textiles, including plasma treatments and nanoparticles - Discusses surface modification strategies for textile applications such as expansion into technical textile applications
Download or read book Metals Abstracts written by and published by . This book was released on 1994 with total page 1620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface Coatings Technology written by B. D. Sartwell and published by Elsevier. This book was released on 2016-06-03 with total page 981 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface & Coatings Technology, Volume 61 presents the proceeding of the 20th International Conference on Metallurgical Coatings and Thin Films, held in San Diego, California, on April 19–23, 1993. This book discusses a variety of topics related to surface and coatings technology, including coatings for use at high temperature, hard coatings, and vapor deposition technology. Organized into 141 chapters, this compilation of papers begins with an overview of the coating requirements for long-life bucket protection, how each of these coating systems has performed, and the advantages and disadvantages of each. This text then discusses the gradient-free transition step achieved in the element analysis of the depth profiles. Other chapters consider the metastable yttrium oxide films that are synthesized using reactive sputter deposition. This book discusses as well the use of appropriate copper-based alloy coatings on structural components. The final chapter deals with the particle mechanical and thermal behavior in the process of high velocity oxy-fuel spraying. This book is a valuable resource for chemical engineers and metallurgists.
Download or read book Conventional and High resolution Transmission Electron Microscopy Study of Spin glass amorphous silicon Multilayers written by David A. Howell and published by . This book was released on 1995 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of Ultra High Vacuum Sputtered Thin Films written by Sumner P. Wolsky and published by . This book was released on 1964 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Germanium films were sputtered onto quartz and self-substrates in a low-pressure thermionically supported discharge. Reflection electron diffraction and x-ray examination showed that over comparable temperature ranges the orientation of sputtered geranium on quartz films differed from that of evaporated films. Epitaxy was observed on self-substrates at 150 C. Electrical characteristics of evaporated and sputtered films were strikingly similar despite wide variation in substrate material and temperature and in deposition rates. (Author).
Download or read book Crystallinity of RF Sputtered MoS2 Films written by Jeffrey R. Lince and published by . This book was released on 1988 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: The crystallinity and morphology of thin, radio-frequency (rf)-sputtered MoS2 films deposited on 440C stainless steel substrates at both ambient (approx. 70 C) and high temperatures (245 C) were studied by scanning electron microscopy (SEM) and by x ray diffraction (Read thin film photography and 0-20 scans). Under SEM, the films exhibited a 'ridgelike' (or platelike) formation region for thicknesses between 0.18 and 1.0 micrometer MoS2. X-ray diffraction was shown to give more detailed and accurate information than electron diffraction previously used for elucidating the structure of sputtered lubricant films. Keywords: Solid lubricant films, Molybdenum disulfide, Radio frequency sputtering, Thin film stress, Lattice defects, X ray diffraction.
Download or read book Progress in Transmission Electron Microscopy 2 written by Xiao-Feng Zhang and published by Springer Science & Business Media. This book was released on 2001-10-18 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transmission electron microscopy (TEM) is now recognized as a crucial tool in materials science. This book, authored by a team of expert Chinese and international authors, covers many aspects of modern electron microscopy, from the architecture of novel electron microscopes, advanced theories and techniques in TEM and sample preparation, to a variety of hands-on examples of TEM applications. Volume 2 illustrates the important role that TEM is playing in the development and characterization of advanced materials, including nanostructures, interfacial structures, defects, and macromolecular complexes.
Download or read book Ultra High Vacuum in a Transmission Electron Microscope for Observing this Film Growth written by F. C. S. M. Tothill and published by . This book was released on 1969 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Briefs written by and published by . This book was released on 1994 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Resolution Electron Microscopy of Defects in Materials Volume 183 written by Materials Research Society and published by Pittsburgh, Pa. : Materials Research Society. This book was released on 1990-08-10 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners.
Download or read book In Situ Transmission Electron Microscopy Experiments written by Renu Sharma and published by John Wiley & Sons. This book was released on 2023-05-15 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: In-Situ Transmission Electron Microscopy Experiments Design and execute cutting-edge experiments with transmission electron microscopy using this essential guide In-situ microscopy is a recently-discovered and rapidly-developing approach to transmission electron microscopy (TEM) that allows for the study of atomic and/or molecular changes and processes while they are in progress. Experimental specimens are subjected to stimuli that replicate near real-world conditions and their effects are observed at a previously unprecedented scale. Though in-situ microscopy is becoming an increasingly important approach to TEM, there are no current texts combining an up-to-date overview of this cutting-edge set of techniques with the experience of in-situ TEM professionals. In-Situ Transmission Electron Microscopy Experiments meets this need with a work that synthesizes the collective experience of myriad collaborators. It constitutes a comprehensive guide for planning and performing in-situ TEM measurements, incorporating both fundamental principles and novel techniques. Its combination of technical detail and practical how-to advice makes it an indispensable introduction to this area of research. In-Situ Transmission Electron Microscopy Experiments readers will also find: Coverage of the entire experimental process, from method selection to experiment design to measurement and data analysis Detailed treatment of multimodal and correlative microscopy, data processing and machine learning, and more Discussion of future challenges and opportunities facing this field of research In-Situ Transmission Electron Microscopy Experiments is essential for graduate students, post-doctoral fellows, and early career researchers entering the field of in-situ TEM.
Download or read book Effects of Crystallite Orientation on the Oxidation of MoS2 Thin Films written by P. D. Fleischauer and published by . This book was released on 1985 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin films of MoS2 have been prepared, by rf sputter deposition, with different microstructures that show markedly different susceptibilities to oxidation or other environmental degradation. The films were exposed to air atmospheres of variable relative humidity, and the extent of oxidation was measured by means of Auger electron (AES) and X-ray photoelectron (XPS) spectroscopies. The morphologies of the films were determined by transmission electron microscopy. Depths of oxidation of the thin films were calculated from changes in AES peak-to-peak height ratios and in XPS peak intensity ratios through the use of standard escape-depth models for attenuation of electron emission by a layer of reacted material (in the present case, MoO3). The results show that MoS2 films whose crystallites are oriented with their basal planes at random angles to the plane of the substrate surface (designated Type I films) are oxidized to depths equal to or greater than 300 A, whereas films whose crystallite basal planes are coplanar with (parallel to) the substrate surface (Type II films) are oxidized to a maximum depth of 10 to 15 A. These results are interpreted in terms of relative reactivities of edge versus basal planes of the MoS2 crystallites. Keywords: Molybdenum disulfide; Solid lubrication; Thin-film chemistry; Thin-film oxidation; Crystallite orientation.
Download or read book Ceramic Abstracts written by American Ceramic Society and published by . This book was released on 1995 with total page 1150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1996 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Deposition of Thin Films in High and Ultra High Vacuum written by D. J. Reid and published by . This book was released on 1966 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
